centos7 安装JDK1.8
查看 JDK 版本
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| [root@tool tool]
java version "1.8.0_241" Java(TM) SE Runtime Environment (build 1.8.0_241-b07) Java HotSpot(TM) 64-Bit Server VM (build 25.241-b07, mixed mode)
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查看 JDK 相关
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| [root@tool tool]#rpm -qa | grep java
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删除 JDK
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| [root@tool tool]#rpm -e --nodeps java-1.7.0-openjdk-xxxx
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检查 JDK 版
下载 JDK 安装包
https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html
注册下载得到文件: jdk-8u241-linux-x64.tar.gz
链接：https://pan.baidu.com/s/1UX3qi6XbJZF8lzlpqFr9Fg
提取码：wajb
把下载 JDK 安装包传输到服务器
切换到相关目录解压
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| [root@tool /]# cd usr/java
[root@tool java]# ls
jdk-8u241-linux-x64.tar.gz
[root@tool java]# tar -zxvf jdk-8u241-linux-x64.tar.gz
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配置 JDK 环境变量，并生效
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| [root@tool /]#vi /etc/profile
export JAVA_HOME=/usr/java/jdk1.8.0_241
export CLASSPATH=.:${JAVA_HOME}/jre/lib/rt.jar:${JAVA_HOME}/lib/dt.jar:${JAVA_HOME}/lib/tools.jar
export PATH=$PATH:${JAVA_HOME}/bin
[root@tool /]# source /etc/profile
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centos7 安装 Maven
下载 Maven 包
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| [root@tool tool]# wget https:
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解压 Maven 包
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| [root@tool tool]# tar -xf apache-maven-3.6.3-bin.tar.gz -C /usr/local/
[root@tool tool]# mv /usr/local/apache-maven-3.6.3/ maven3.6
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配置环境变量
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| [root@tool /]#vi /etc/profile #maven environment export PATH=$PATH:/usr/local/maven3.6/bin
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验证
运行maven需要Java环境—-系统安装有jdk，并且在系统中配置了JAVA_HOME。
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| [root@tool tool]# mvn -version Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f) Maven home: /usr/local/maven3.6 Java version: 1.8.0_241, vendor: Oracle Corporation, runtime: /usr/java/jdk1.8.0_241/jre Default locale: de_DE, platform encoding: UTF-8 OS name: "linux", version: "3.10.0-229.el7.x86_64", arch: "amd64", family: "unix"
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| vi /etc/profile #java environment export JAVA_HOME=/usr/java/jdk1.8.0_241 export CLASSPATH=.:${JAVA_HOME}/jre/lib/rt.jar:${JAVA_HOME}/lib/dt.jar:${JAVA_HOME}/lib/tools.jar export PATH=$PATH:${JAVA_HOME}/bin
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